/**
 * @author ghp
 * @date 2023/6/17
 * @title
 * @description
 */
public class Main {
    public static void main(String[] args) {
        Solution solution = new Solution();
        TreeNode node1 = new TreeNode(2);
        TreeNode node2 = new TreeNode(1);
        TreeNode node3 = new TreeNode(3);
        node1.left = node2;
        node1.right = node3;
    }
}
